INF = 10 ** 9
MOD = 10 **9 + 7
import sys
sys.setrecursionlimit(100000000)
dy = (-1,0,1,0)
dx = (0,1,0,-1)
from heapq import heapify,heappop,heappush

def main():
    n = int(input())
    a = list(map(int,input().split()))
    a.sort()
    cuml = [0] * (n + 1)
    cumr = [0] * (n + 1)
    for i in range(n):
        cuml[i + 1] = cuml[i] + a[i]
    for i in range(n - 1,-1,-1):
        cumr[i] = cumr[i + 1] + a[i]
    
    ans = -INF
    #要素数が奇数の場合
    for i in range(n):
        max_len = min(i,n - i - 1)
        r = max_len + 1
        l = 0
        while r - l > 1:
            mid = (r + l)//2
            if a[i - mid] + a[n - mid] > 2*a[i]:
                l = mid
            else:
                r = mid
        ans = max(ans,cuml[i + 1] - cuml[i - l] + cumr[n - l] - a[i]*(2*l + 1))
    
    #要素数が偶数の場合
    for i in range(1,n):
        max_len = min(i - 1,n - i - 1)
        r = max_len + 1
        l = 0
        while r - l > 1:
            mid = (r + l)//2
            if a[i - mid - 1] + a[n - mid] > a[i - 1] + a[i]:
                l = mid
            else:
                r = mid
        ans = max(ans,cuml[i + 1] - cuml[i - l - 1] + cumr[n - l] - (a[i] + a[i - 1])*(l + 1))
    
    print(ans)
if __name__=='__main__':
    main()